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Finding the Fourth Proportional to 713,427.60, 1,070,659.80 and 293,005.20

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Solution

The fourth proportional to 713,427.60, 1,070,659.80 and 293,005.20 is: 439,720.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,427.60 : 1,070,659.80 = 293,005.20 : x
  2. Step 2: Convert to fraction form
    713,427.60/1,070,659.80 = 293,005.20/x
  3. Step 3: Cross multiply
    713,427.60x = 1,070,659.80 × 293,005.20
  4. Step 4: Simplify right side
    713,427.60x = 313,708,888,830.96
  5. Step 5: Solve for x
    x = 313,708,888,830.96/713,427.60
  6. Step 6: Final answer
    x = 439,720.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.